that was a intresting video but yea if you really think were the only life out there idk bout that. but if we are we could be the beginning or the end think bout that. and humans are native to earth but we are slowly distroying it. im not a tree huger but i understand wat they are fighting for. but thos aliens in that video arent martian if thats wat you guys are thinking mars has been proven that there is no life even tho water was found on it it is not habitable.
i last saw this show on discovery chanel called trough the wormhole ( with morgan freeman) and millions of years ago when comets were constantly plowing into earth and mars and so on that debre from mars came to earth with all kinds of micro organisms and that could be how life had come here in the first place don't really know what morgan freeman has to do with it